Dobre Den Jane,
Though to give you some learned advice with having unattended property, especially when owned by foreigners, in Bulgaria. I lived in Bulgaria for years conducting business and consulting. I also spent about 3 months with Roma gypsies in the Rhodope Mountains to better know what they actually are about. As a freelance consultant I was all about Bulgaria and even though my Slovic language is now to be desired, I would take Bulgars about their own country.
Roman, how it works is this, if they know a out of the way house is vacant, they Will come as ghost and strip the house, even ripping the wiring from the walls and windows from their openings. It is easy to do when ya know how homes are built according to Bulgarian standard. I conducted a commercial project in Smolyan for a British chap and an Arab national, as well as, other properties in different parts of the country. The best was a mud and straw house restore near Veliko Tarnovo that was done to be a hostel. It is also one of the oldest type of building construction in that area, still standing. I think it dates back to Roman times not unlike homes in Nesebar.
Anyways, excuse me for getting side-tracked, if you plant food, it may not be animals you have to concern about robbing you for subsistence. Even though Bulgaria is part of NATO and the E.U., when I was there, many foreigners bought property as a vacation spot or to build up as you state with plans to reside there. Many would return from their home country to find their property and hard work dismantled. Get to know your neighbors Real well and be better than kind to them. Many neighbors try to steer clear of Roma given their ties with higher ups in Bulgarian criminality. If ya hire Roma to do odd work, steer clear with sharing too much personal details and first check wit the local municipality if that person has been vetted by them. Many Roma are trying to break free of the stigma that corrupt society has placed upon them, so do not take it as all Roma are of criminality. I do not share this to worry, scare or bring forth undo concern, just I know Bulgaria, Albania, Ukrainia, Romania, Turkey and Macedonia almost as good as Tennessee.
If ya ever need assistance with sifting through corruption, reach out to me. I can see what can be done. No, I am not soliciting, only helping fellow humans who actually seek to undo the harm done to our living vessel.
Mikhael